Fan Coil Thermostat Low Voltage Thermostat Switch Type 5 Relays Switch Action - Thermostat Control Range 50 Degrees to 90 Degrees F Differential (Deg. F) +/-2 Thermostat Heating/Cooling Heating/Cooling Thermostat Number of Pipes 2 or 4 Thermostat Number of Speeds 3 Fan Switching Hi-Med-Low-Auto-Off System Switching Auto-Heat-Cool-Off Sensor Type - 3 13/16 in Sensing Bulb Dia (In.) - 5 13/16 in Sensing Bulb Length (In.) - 1 1/8 in Capillary Length (In.) -